Engine



m e e h S m e e h S 2 m LI G N KB M a d o M 0 W No. 603,788. PatentedMay 10,1898.

INVENTOR.

ATTORNEYS WITNESSES 2 Sheets-Sheet 2.

Patented May 10,1898.

.V Illllllla INVENTOR.

I BY

flw RTTORNEYS J. KELLER. ENGINE.

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ilNrrED STATES PATENT @FFICE.

JULIUS KELLER, OF PHILADELPHIA, PENNSYLVANIA.

ENGINE.

SPECIFICATION forming part of Letters Patent No. 603,788, dated May10,1898.

Application filed September 29, 1897. Serial No. 653,482. (No model.) i

To all whom it may concern.-

Be it known that I, J ULIUs KELLER, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented ainew and useful Improvement in Engines,which improvementis fully set forth in the following specification and accompanyingdrawings. 7

My invention consists of an improved con struction of engine in which apluralityof cylinders having an intermediate valve-chamber provided withalining valves are employed, the reciprocal motion of the pistonscontained in said cylinders being transformed to a rotary motion bysuitable intervening mechanism, the tool being balanced under allconditions and readily transported.

It also consists of a plurality of spindles adapted to revolvesimultaneously but at different rates of speed, either of said spindlesbeing adapted for the reception of the tool, whereby the latter may beexpeditiously changed from one spindle to the other, so as to be runfast or slow, as may be desired.

It further consists of novel details ofcon struction, all as will behereinafter fully set forth, and particularly pointed out in the claims.

Figure 1 represents a side elevation of an engine embodying myinvention, a portion thereof being shown in section, the latter beingtaken on line 0: m, Fig. 2. Fig. 2 represents a horizontal section ofthe engine, the

section being taken on line y y, Fig. 1, and

showing the relative position of the pistons, valve, and their adjuncts.Fig. 3 represents a detached sectional view showing means for rotating adrill at different speeds' Fig. 4 represents a sectional view showingthe Valve and its adjuncts.

Similar figures of reference indicate corresponding parts .in thedrawings.

Referring to the drawings, 1 designates an engine, the same consistingof the air-chamber 2, into which the air or other motive fluid isconducted through the air-inlet 2 ,'said air-chamber being located abovethe cylinders 3 and 4:, which are located in the present instance sidebyside and substantially parallel to each other. The cylinder 3 containsthereto is substantially the same a description of one will suffice forall. The yoke 13 is in the present instance in the shape of aparallelogram or other figure, which recipr0- cates on the slides 13 andthe guides 12 The interior walls of the yoke are in contact with thesliding box 14,which is made in sections 15, the latter engaging thecrank 16, which is mounted in suitable bearings in the top bearing-plate23 and the bottom bearingplate 22. The crank-shaft 16 has securedthereto in any suitable manner the pinion 17, which rotates in unisontherewith and is in mesh with the main gear 18,which is located belowthe cylinders 3 and 4.

19 designates the main-gear bushing, and 20 the thrust-washer, whichcontacts with a suitable portion of the stud 21, the relative positionof the parts when assembled being understood from Fig. l.

25 designates an eccentric which is mounted on the shaft 16 and engagedby the eccentric-strap 26, which has an arm 27, the latter carrying thepin 28, by means of which connection is made to the lever 29, the latterbeing fulcrumed at the point 30. The end 31 of the lever 29 passesthrough an opening 32 in the piston-rod 33, the latter carrying thepiston-valve 34, which consists of the two cylindrical portions 35 and36, which are connected by a neck 37, it being noted that there are twoof these piston-valves 34 and 38 each of which is in alinement with eachother and located in the valve chest or chamber 38 and operated from thecrank-shafts 16, which are located diagonally to each other, it beingnoted that each of said valves is located in the same valve-chamber,whose bore in the present instance forms an unbroken continuity.

39 and 40 designate ports which are located in the valve-chamber 38,each side of the center thereof, said ports being always open withrespect to the valves. The left-hand valve 34 regulates or controls theflow of the air for the pistons 5 and 6, while the right-hand valve 38controls the air operating the pistons 7 and 8. The pistons 5 and 6 areshown on half-stroke and the air passing through ports 42, 43, and 44enters the cylinder 3 near the center thereof and forces the pistons 5and 6 apart, the ports 45, 46, 47, and 48 being open for exhaust and inconnection with the exhaust-port 49. The pistons 7 and 8 are shown inFig. 2 as being at the end of their outward stroke, the valve 38 beingnow at half-stroke and the inlet-ports and 53 being closed, a furthermovement of the valve 38 will open the ports 50, 51, and 52 for exhaustand the ports 53, 54, 55, and 56 for the inlet of air at the end of thecylinder 4 and upon the pis tons 7 and 8 contained in said cylinder 4,thereby forcing both pistons toward each other, said cylinder 4exhausting through ports 52, 51, 50, and 57, the above-describedoperations taking place alternately and successively. The reciprocationof the pistons will cause a corresponding movement to be imparted to thepiston-rods attached thereto, thereby reciprocating the yokes 13, andconsequently the crank-shafts 16, the rotation of said crank-shaftsbeing imparted to the pinions 17, and thence to the main gear 18, fromwhich latter rotation is imparted to the drill. The throttle valve orplug 59, located in the seat 59 controls the inlet to the valve-chest atthe point 2 and is operated by the link 60, which latter has the member61 attached thereto, said member being pivoted at 62 to the handle 64and said throttle-valve being operated by the arm 63, the latter andsaid member being arranged in the form of an} elbow-lever, it beingapparent that when said Q arm is pressed against the handle 64 thethrot- T tle is opened and the machine starts, but as soon as the arm 63is released it closes the throttle-valve and the machine stops.

I desire to call especial attention to the fact that by locating theinlet for the motive fluid so that said inlet is cont-rolled by thelongitudinal movement of the throttle-valve proper I am enabled tothrottle or control the admission of the motive fluid with greatexactness, so that the engine can be run fast or slow at will, a resultwhich cannot be attained where an ordinary stop-valve having a bevelseatis employed.

The throttle-valve is closed by means of the spring 59 which surroundsthe valve-stem 59 one end of said spring abutting against a shoulder ofsaid valve and its other end contacting with the plate or washer 57through which said valve-stem passes.

It will be especially noted that the space between the feed-screw andthe drill or tool is as short as possible and that by having thecylinders 3 and 4 located in the center of the machine and parallel toeach other the7o machine is perfectly balanced under all conditions.

In Fig. 3 is shown means for. rotating a drill at different speeds, theparts appearing in substantially the same relative position as seen atthe lower portion of Fig. 1, 22 designating the bottom bearing-plate, inwhich the crank 16 has its lower bearing, said crank having the pinion60 secured thereto, said pinion meshing with the main gear 61 having thehub or spindle 62 depending therefrom and the socket 63 therein for thereception of the drill.

64 designates a pinion mounted on the crank 16 adjacent to the pinion 60but of less diameter than the latter, said pinion 64 meshing with themaingear 65 which is of greater diameter than the gear 61 said gear 65having a depending sleeve or spindle 66 which is provided with exteriorscrew-threads upon which the drill or holder therefor is adapted to besecured.

It will be evident from the foregoing that the main gear 61 will revolvefaster than the gear 65 and when it is desired to change the speed ofrotation of a drill it is only necessary to remove the drill from thesocket 63 and to make the necessary connections to enable the drill tobe rotated by means of the threaded portion of the sleeve 66 it beingunderstood that the pinions 6O and 64 revolve in unison, as do theirintermeshing gears, whereupon the spindles 62 and 66 are also caused torevolve simultaneously, whereby the tool employed can be expeditiouslyinterchanged, so as to run fast or slow, as may be desired.

It will of course be evident that the engine above described can beoperated by steam as well as by air or any other motive fluid.

It will of course further be evident that changes may be made by thoseskilled in the art that will come within the scope of my invention, andI do not, therefore, desire to be limited in every instance to the exactconstruction I have herein shown and described.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In an engine, a plurality of cylinders, a valve-chamber provided withalining valves intermediate of and in communication with ton-Valves insaid chest, shafts rotated by the reciprocation of said pistons,pinions-mounted on said shafts, a main gear in mesh with said pinionsand connections from said shafts for operating said valves.

3. In an engine, a plurality of cylinders, each having a pair of pistonstherein, an alining valve-chest located in proximity with saidcylinders, a plurality of valves in said chest, yokes suitably supportedand connected to the piston-rods attached to said pistons,crankshafts onwhich said yokes are mounted, pinions carried by said crank-shafts, amain gear in mesh with said pinions, and mechanism intermediate saidshafts and valves for reciprocating the latter.

4. In an engine, a pair of cylinders arranged side by side, avalve-chest intermediate said cylinders, valves in said chest andpistons in said cylinders working oppositely to each other, a pluralityof crank-shafts, a plurality of yokes, a piston-rod for each pistonbeing secured to one of said yokes, boxes common to said yokes andshafts, slides and guides for supporting said yokes, an eccentricmounted on a pair of said shafts arranged diagonally to each other,connections from said eccentrics for operating said valves, pinionsmounted on said shafts and a main gear rotatably supported andin meshwith said pinions.

5. In an engine, a main gear rotatably supported, a plurality ofcylinders located adjacent to said gears, each cylinder having a pair ofpistons therein moving in opposite directions, a valve-chest containinga pair of valves, means for moving the latter in opposite directions,ports leading from said valve-chest to substantially the middle of eachcylinder and also to the ends of the latter, said ports servingalternately as inlet and exhaust ports, and aseries of pinions rotatedby the reciprocation of said pistons, said pinions meshing with saidmain gear.

6. In an engine, a pair of cylinders arranged side by side, a pair ofpistons in each cylinder, a valve-chest connected with said cylinders,valves in said chest controlling the reciprocation of said pistons, aplurality of crankshafts, a plurality of yokes, a rod for each pistonsecured to each of said yokes, boxes common to said yokes and shafts, aneccentric mounted on a pair of said shafts arranged diagonally to eachother, connections from said eccentrics for operating said valves,pinions mounted on said shafts and a main gear rotatably supported andin mesh with said pinions.

7. In an engine, main gears of different diameters rotatably supported,a plurality of cylinders located above said gears, each of saidcylinders having a pair of pistons therein moving in oppositedirections, a valve-chest containing a pair of valves, means for movingthe latter in opposite directions, ports leading from said valve-chestto substantially the middle of each cylinder, and also to the shaftsrotatably mounted and having their bearings in said casing, connectionscommon to said crank-shafts, pistons and valves, a plurality of pinionsmountedon each of said crank-shafts, and revolving in unison therewith,a plurality of gears meshing with said pinions, and a plurality ofspindles rotatably mounted in said casing.

9. In an engine,an inclosing casing, a chamber supported thereon inwhich the motive fluid is initially received, an inlet for said fluid, aseat or passage extending transversely to said inlet, a throttle-valvelongitu-. dinally movable in said passage past said opening, a springfor retaining said throttlevalve in position, means for actuating saidvalve from the exterior, a plurality of cylinders located in saidcasing, a plurality of pistons in each of said cylinders, a valve-chestadjacent the latter and communicating therewith, a plurality of valvesin said chest, means for operating said valves, crank-shafts rotatablymounted in said casing, and means for transmitting power from saidshafts to a drill or tool.

10. In an engine, a plurality of cylinders, a plurality of pistons ineach cylinder, valves for controlling said pistons, a plurality of maingears of varying diameters, rotatably supported in proximity to saidcylinders, a plurality of crank-shafts, means for efiecting the rotationof said shafts by the reciprocation of said pistons, a plurality ofpinions of different diameters mounted upon each of said shafts androtating in unison therewith, said pinions meshing with said gears andspindles actuated by the latter, said spindles rotating simultaneouslyand at dilferent speeds.

11. In an engine, the combination of a plurality of cylinders, aplurality of pistons in each cylinder, a valve-chest intermediate ofsaid cylinders, and in communication therewith, a plurality of valves insaid chest, said valves being located in each end thereof, a chamberlocated above said chest, an inlet for the motive fluid leading intosaid chamber, a passage extending transversely to said inlet, athrottle-valve consisting of a plug movable in said passage and adaptedto be moved past said inlet so as to wholly or partially close thelatter, a spring for holding said throttle-valve in position, means foroperating said valve from the exterior, a main gear rotatably supportedin proximity to said type, adapted to reciprocate in said chamber, forenabling the operator to gradually admit the motive fluid to saidcylinders, pinions on said shafts, a main gear rotatably supported insaid casing and meshing with said pinions, a main-gear bushing, athrust-washer, a stud against which said bushing and washer are adaptedto contact, and means for operating said valves.

JULIUS KELLER. Witnesses:

E. HAYWARD FAIRBANKS, JOHN A. QWIEDERSHEIM.

